14x24x6 oil seal
1. Dimensions The numbers can indicate the dimensions of the seal. For instance, the first number may denote the inner diameter, the second, the outer diameter, and the third could refer to the width or height of the seal. These dimensions are critical for ensuring that the seal fits perfectly within the intended assembly, thereby maximizing effectiveness.
20 35 7 oil seal

One of the primary functions of seal kits is to create a barrier that allows hydraulic fluid to move within the cylinder without escaping. When the cylinder is actuated, the seals maintain the pressure needed to perform work, lifting heavy loads, or moving machinery parts. In addition to preventing fluid leaks, seal kits also provide lubrication to the moving parts, reducing friction and wear. This not only extends the life of the cylinder but also minimizes downtime due to maintenance and repairs.
cylinder seal kits

What is Manhole?
A manhole is a covered opening or access point on the surface of a road, sidewalk, or other paved area that provides entry into an underground utility or infrastructure system. It is typically a round or rectangular hole large enough for a person to enter and perform maintenance or inspection tasks. Manholes are common in urban areas and serve as access points to underground networks, including sewer systems, storm water drains, electrical and communication cables, water pipelines, and gas lines. They allow workers to enter these underground structures for repairs, cleaning, inspections, or installations.